Question

Round off 52,91,37,846 to the nearest ten-lakh.

Answer 1

Answer is 529000000
now look to the rule of rounding
Highlight the digit that may change.
Underline the digit on the right.
Round the highlighted digit If the underlined digit is 5 or more the highlighted digit is increased by 1.
If the underlined digit is 4 or less the highlighted digit stays the same.
All the digits to the right of the highlighted digit are changed to zeros.
Here changing digit is 9. So underline 1. It is less than 5. So 9 remine same. And all other numbers right to 9 become zero